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yocto_groundspeed.py
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Wed, Feb 26, 23:15

yocto_groundspeed.py
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#*********************************************************************
#*
#* $Id: yocto_groundspeed.py 23243 2016-02-23 14:13:12Z seb $
#*
#* Implements yFindGroundSpeed(), the high-level API for GroundSpeed functions
#*
#* - - - - - - - - - License information: - - - - - - - - -
#*
#* Copyright (C) 2011 and beyond by Yoctopuce Sarl, Switzerland.
#*
#* Yoctopuce Sarl (hereafter Licensor) grants to you a perpetual
#* non-exclusive license to use, modify, copy and integrate this
#* file into your software for the sole purpose of interfacing
#* with Yoctopuce products.
#*
#* You may reproduce and distribute copies of this file in
#* source or object form, as long as the sole purpose of this
#* code is to interface with Yoctopuce products. You must retain
#* this notice in the distributed source file.
#*
#* You should refer to Yoctopuce General Terms and Conditions
#* for additional information regarding your rights and
#* obligations.
#*
#* THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 'AS IS' WITHOUT
#* WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
#* WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS
#* FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO
#* EVENT SHALL LICENSOR BE LIABLE FOR ANY INCIDENTAL, SPECIAL,
#* INDIRECT OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA,
#* COST OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR
#* SERVICES, ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT
#* LIMITED TO ANY DEFENSE THEREOF), ANY CLAIMS FOR INDEMNITY OR
#* CONTRIBUTION, OR OTHER SIMILAR COSTS, WHETHER ASSERTED ON THE
#* BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE), BREACH OF
#* WARRANTY, OR OTHERWISE.
#*
#*********************************************************************/
__docformat__ = 'restructuredtext en'
from yocto_api import *
#--- (YGroundSpeed class start)
#noinspection PyProtectedMember
class YGroundSpeed(YSensor):
"""
The Yoctopuce class YGroundSpeed allows you to read the ground speed from Yoctopuce
geolocalization sensors. It inherits from the YSensor class the core functions to
read measurements, register callback functions, access the autonomous
datalogger.
"""
#--- (end of YGroundSpeed class start)
#--- (YGroundSpeed return codes)
#--- (end of YGroundSpeed return codes)
#--- (YGroundSpeed dlldef)
#--- (end of YGroundSpeed dlldef)
#--- (YGroundSpeed definitions)
#--- (end of YGroundSpeed definitions)
def __init__(self, func):
super(YGroundSpeed, self).__init__(func)
self._className = 'GroundSpeed'
#--- (YGroundSpeed attributes)
self._callback = None
#--- (end of YGroundSpeed attributes)
#--- (YGroundSpeed implementation)
def _parseAttr(self, member):
super(YGroundSpeed, self)._parseAttr(member)
@staticmethod
def FindGroundSpeed(func):
"""
Retrieves a ground speed sensor for a given identifier.
The identifier can be specified using several formats:
<ul>
<li>FunctionLogicalName</li>
<li>ModuleSerialNumber.FunctionIdentifier</li>
<li>ModuleSerialNumber.FunctionLogicalName</li>
<li>ModuleLogicalName.FunctionIdentifier</li>
<li>ModuleLogicalName.FunctionLogicalName</li>
</ul>
This function does not require that the ground speed sensor is online at the time
it is invoked. The returned object is nevertheless valid.
Use the method YGroundSpeed.isOnline() to test if the ground speed sensor is
indeed online at a given time. In case of ambiguity when looking for
a ground speed sensor by logical name, no error is notified: the first instance
found is returned. The search is performed first by hardware name,
then by logical name.
@param func : a string that uniquely characterizes the ground speed sensor
@return a YGroundSpeed object allowing you to drive the ground speed sensor.
"""
# obj
obj = YFunction._FindFromCache("GroundSpeed", func)
if obj is None:
obj = YGroundSpeed(func)
YFunction._AddToCache("GroundSpeed", func, obj)
return obj
def nextGroundSpeed(self):
"""
Continues the enumeration of ground speed sensors started using yFirstGroundSpeed().
@return a pointer to a YGroundSpeed object, corresponding to
a ground speed sensor currently online, or a None pointer
if there are no more ground speed sensors to enumerate.
"""
hwidRef = YRefParam()
if YAPI.YISERR(self._nextFunction(hwidRef)):
return None
if hwidRef.value == "":
return None
return YGroundSpeed.FindGroundSpeed(hwidRef.value)
#--- (end of YGroundSpeed implementation)
#--- (GroundSpeed functions)
@staticmethod
def FirstGroundSpeed():
"""
Starts the enumeration of ground speed sensors currently accessible.
Use the method YGroundSpeed.nextGroundSpeed() to iterate on
next ground speed sensors.
@return a pointer to a YGroundSpeed object, corresponding to
the first ground speed sensor currently online, or a None pointer
if there are none.
"""
devRef = YRefParam()
neededsizeRef = YRefParam()
serialRef = YRefParam()
funcIdRef = YRefParam()
funcNameRef = YRefParam()
funcValRef = YRefParam()
errmsgRef = YRefParam()
size = YAPI.C_INTSIZE
#noinspection PyTypeChecker,PyCallingNonCallable
p = (ctypes.c_int * 1)()
err = YAPI.apiGetFunctionsByClass("GroundSpeed", 0, p, size, neededsizeRef, errmsgRef)
if YAPI.YISERR(err) or not neededsizeRef.value:
return None
if YAPI.YISERR(
YAPI.yapiGetFunctionInfo(p[0], devRef, serialRef, funcIdRef, funcNameRef, funcValRef, errmsgRef)):
return None
return YGroundSpeed.FindGroundSpeed(serialRef.value + "." + funcIdRef.value)
#--- (end of GroundSpeed functions)

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